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#include <newt.h>
#include <signal.h>
#include <stdbool.h>
#include "../cache.h"
#include "../debug.h"
#include "browser.h"
#include "helpline.h"
#include "ui.h"
#include "util.h"
#include "libslang.h"
#include "keysyms.h"
pthread_mutex_t ui__lock = PTHREAD_MUTEX_INITIALIZER;
static volatile int ui__need_resize;
void ui__refresh_dimensions(bool force)
{
if (force || ui__need_resize) {
ui__need_resize = 0;
pthread_mutex_lock(&ui__lock);
SLtt_get_screen_size();
SLsmg_reinit_smg();
pthread_mutex_unlock(&ui__lock);
}
}
static void ui__sigwinch(int sig __used)
{
ui__need_resize = 1;
}
static void ui__setup_sigwinch(void)
{
static bool done;
if (done)
return;
done = true;
pthread__unblock_sigwinch();
signal(SIGWINCH, ui__sigwinch);
}
int ui__getch(int delay_secs)
{
struct timeval timeout, *ptimeout = delay_secs ? &timeout : NULL;
fd_set read_set;
int err, key;
ui__setup_sigwinch();
FD_ZERO(&read_set);
FD_SET(0, &read_set);
if (delay_secs) {
timeout.tv_sec = delay_secs;
timeout.tv_usec = 0;
}
err = select(1, &read_set, NULL, NULL, ptimeout);
if (err == 0)
return K_TIMER;
if (err == -1) {
if (errno == EINTR)
return K_RESIZE;
return K_ERROR;
}
key = SLang_getkey();
if (key != K_ESC)
return key;
FD_ZERO(&read_set);
FD_SET(0, &read_set);
timeout.tv_sec = 0;
timeout.tv_usec = 20;
err = select(1, &read_set, NULL, NULL, &timeout);
if (err == 0)
return K_ESC;
SLang_ungetkey(key);
return SLkp_getkey();
}
static void newt_suspend(void *d __used)
{
newtSuspend();
raise(SIGTSTP);
newtResume();
}
static void ui__exit(void);
static void ui__signal(int sig)
{
ui__exit();
psignal(sig, "perf");
exit(0);
}
static int ui__init(void)
{
int err;
newtInit();
err = SLkp_init();
if (err < 0) {
pr_err("TUI initialization failed.\n");
goto out;
}
SLkp_define_keysym((char *)"^(kB)", SL_KEY_UNTAB);
newtSetSuspendCallback(newt_suspend, NULL);
ui_helpline__init();
ui_browser__init();
signal(SIGSEGV, ui__signal);
signal(SIGFPE, ui__signal);
signal(SIGINT, ui__signal);
signal(SIGQUIT, ui__signal);
signal(SIGTERM, ui__signal);
out:
return err;
}
static void ui__exit(void)
{
SLtt_set_cursor_visibility(1);
SLsmg_refresh();
SLsmg_reset_smg();
SLang_reset_tty();
}
void setup_browser(bool fallback_to_pager)
{
if (!isatty(1) || !use_browser || dump_trace) {
use_browser = 0;
if (fallback_to_pager)
setup_pager();
return;
}
use_browser = 1;
ui__init();
}
void exit_browser(bool wait_for_ok)
{
if (use_browser > 0) {
if (wait_for_ok)
ui__question_window("Fatal Error",
ui_helpline__last_msg,
"Press any key...", 0);
ui__exit();
}
}
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